1321331238707 has 2 divisors, whose sum is σ = 1321331238708. Its totient is φ = 1321331238706.

The previous prime is 1321331238673. The next prime is 1321331238769. The reversal of 1321331238707 is 7078321331231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321331238707 - 2³⁴ = 1304151369523 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321331238407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660665619353 + 660665619354.

It is an arithmetic number, because the mean of its divisors is an integer number (660665619354).

Almost surely, 2^{1321331238707} is an apocalyptic number.

1321331238707 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321331238707 is an equidigital number, since it uses as much as digits as its factorization.

1321331238707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 41.

Adding to 1321331238707 its reverse (7078321331231), we get a palindrome (8399652569938).

The spelling of 1321331238707 in words is "one trillion, three hundred twenty-one billion, three hundred thirty-one million, two hundred thirty-eight thousand, seven hundred seven".